Definition
A comic mailed directly to a reader via a publisher's mail subscription rather than sold through newsstand or direct-market distribution. Per CGC's glossary, subscription copies frequently carry a 'Subscription Crease' — a large crease down the center of the book caused by folding it for mailing — which CGC classifies as a defect that detracts from the numeric grade, alongside other subscription-specific traits such as a mailing label or missing newsstand UPC.
In Panel Profits
Panel Profits treats a subscription copy's mailing crease the same way it treats any other CGC-classified structural defect: it is priced into the numeric grade the copy actually receives, and a subscription copy is not comparable to a non-subscription copy at the same claimed pre-crease condition — only at its actual certified grade.
Comic-market example
A Golden Age subscription copy that would otherwise present in high grade is capped in its final certified grade by a prominent center subscription crease; its FMV benchmark must be drawn from other copies at that same lower certified grade, not from high-grade newsstand comps.
Common mistakes
Do not assume a subscription copy's 'as new when mailed' backstory entitles it to a higher FMV benchmark than its actual certified grade reflects — the subscription crease is priced into the grade CGC actually assigns. Do not confuse a subscription crease (a specific fold defect) with general handling wear.